225877121 has 2 divisors, whose sum is σ = 225877122. Its totient is φ = 225877120.

The previous prime is 225877117. The next prime is 225877133. The reversal of 225877121 is 121778522.

225877121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184416400 + 41460721 = 13580^2 + 6439^2 .

It is a cyclic number.

It is not a de Polignac number, because 225877121 - 2² = 225877117 is a prime.

It is not a weakly prime, because it can be changed into another prime (225877721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112938560 + 112938561.

It is an arithmetic number, because the mean of its divisors is an integer number (112938561).

Almost surely, 2^225877121 is an apocalyptic number.

It is an amenable number.

225877121 is a deficient number, since it is larger than the sum of its proper divisors (1).

225877121 is an equidigital number, since it uses as much as digits as its factorization.

225877121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 35.

The square root of 225877121 is about 15029.2089279509. The cubic root of 225877121 is about 609.0095195264.

The spelling of 225877121 in words is "two hundred twenty-five million, eight hundred seventy-seven thousand, one hundred twenty-one".